test/asan/TestCases/Windows/dll_thread_stack_array_left_oob.cc

   1 // RUN: %clangxx_asan -O0 %p/dll_host.cc -Fe%t
   2 // RUN: %clangxx_asan -LD -O0 %s -Fe%t.dll
   3 // FIXME: 'cat' is needed due to PR19744.
   4 // RUN: not %run %t %t.dll 2>&1 | cat | FileCheck %s
   5
   6 #include <windows.h>
   7 #include <malloc.h>
   8
   9 DWORD WINAPI thread_proc(void *context) {
  10   int subscript = -1;
  11   char stack_buffer[42];
  12   stack_buffer[subscript] = 42;
  13 // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
  14 // CHECK: WRITE of size 1 at [[ADDR]] thread T1
  15 // CHECK-NEXT:  thread_proc {{.*}}dll_thread_stack_array_left_oob.cc:[[@LINE-3]]
  16 //
  17 // CHECK: Address [[ADDR]] is located in stack of thread T1 at offset [[OFFSET:.*]] in frame
  18 // CHECK-NEXT:  thread_proc {{.*}}dll_thread_stack_array_left_oob.cc
  19 //
  20 // CHECK: 'stack_buffer' <== Memory access at offset [[OFFSET]] underflows this variable
  21
  22   return 0;
  23 }
  24
  25 extern "C" __declspec(dllexport)
  26 int test_function() {
  27   HANDLE thr = CreateThread(NULL, 0, thread_proc, NULL, 0, NULL);
  28 // CHECK-LABEL: Thread T1 created by T0 here:
  29 // CHECK:         test_function {{.*}}dll_thread_stack_array_left_oob.cc:[[@LINE-2]]
  30 // CHECK-NEXT:    main {{.*}}dll_host.cc
  31 // CHECK-LABEL: SUMMARY
  32   if (thr == 0)
  33     return 1;
  34   if (WAIT_OBJECT_0 != WaitForSingleObject(thr, INFINITE))
  35     return 2;
  36   return 0;
  37 }